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| 1 | /* Atomic operations. C-SKY version. |
|---|---|
| 2 | Copyright (C) 2018-2022 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library. If not, see |
| 17 | <https://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #ifndef __CSKY_ATOMIC_H_ |
| 20 | #define __CSKY_ATOMIC_H_ |
| 21 | |
| 22 | #define __HAVE_64B_ATOMICS 0 |
| 23 | #define USE_ATOMIC_COMPILER_BUILTINS 1 |
| 24 | #define ATOMIC_EXCHANGE_USES_CAS 1 |
| 25 | |
| 26 | #define __arch_compare_and_exchange_bool_8_int(mem, newval, oldval, model) \ |
| 27 | (abort (), 0) |
| 28 | |
| 29 | #define __arch_compare_and_exchange_bool_16_int(mem, newval, oldval, model) \ |
| 30 | (abort (), 0) |
| 31 | |
| 32 | #define __arch_compare_and_exchange_bool_32_int(mem, newval, oldval, model) \ |
| 33 | ({ \ |
| 34 | typeof (*mem) __oldval = (oldval); \ |
| 35 | !__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0, \ |
| 36 | model, __ATOMIC_RELAXED); \ |
| 37 | }) |
| 38 | |
| 39 | #define __arch_compare_and_exchange_bool_64_int(mem, newval, oldval, model) \ |
| 40 | (abort (), 0) |
| 41 | |
| 42 | #define __arch_compare_and_exchange_val_8_int(mem, newval, oldval, model) \ |
| 43 | (abort (), (__typeof (*mem)) 0) |
| 44 | |
| 45 | #define __arch_compare_and_exchange_val_16_int(mem, newval, oldval, model) \ |
| 46 | (abort (), (__typeof (*mem)) 0) |
| 47 | |
| 48 | #define __arch_compare_and_exchange_val_32_int(mem, newval, oldval, model) \ |
| 49 | ({ \ |
| 50 | typeof (*mem) __oldval = (oldval); \ |
| 51 | __atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0, \ |
| 52 | model, __ATOMIC_RELAXED); \ |
| 53 | __oldval; \ |
| 54 | }) |
| 55 | |
| 56 | #define __arch_compare_and_exchange_val_64_int(mem, newval, oldval, model) \ |
| 57 | (abort (), (__typeof (*mem)) 0) |
| 58 | |
| 59 | #define atomic_compare_and_exchange_bool_acq(mem, new, old) \ |
| 60 | __atomic_bool_bysize (__arch_compare_and_exchange_bool, int, \ |
| 61 | mem, new, old, __ATOMIC_ACQUIRE) |
| 62 | |
| 63 | #define atomic_compare_and_exchange_val_acq(mem, new, old) \ |
| 64 | __atomic_val_bysize (__arch_compare_and_exchange_val, int, \ |
| 65 | mem, new, old, __ATOMIC_ACQUIRE) |
| 66 | |
| 67 | #endif /* atomic-machine.h */ |
| 68 |
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